Generator (Gen) (2005-2014): Design: Freewheel
Some alternators are fitted with freewheels between the rotor shaft and the pulley. However, it is possible to, see that the pulley is fitted with freewheels from the cover fitted over the pulley's nut in the centre. The freewheels allow the alternator's rotor shaft to rotate freely in one direction. This keeps any jerking in the belt transmission to a minimum. For engine B8444S, the alternator is not fitted with freewheels.